A high school third year, with fair skin from her unhealthy state of life, and empty eyes that scare people even further, she's a bold genius girl with strange thoughts. Since childhood she's stood out as a brilliant figure in the biology field, studying at the domestic biogenetic research center, and when she returned to school she encountered an eruption of corpses, so she decided to temporarily leave the research center and stay on the campus to help everyone. Nothing holds her interest, except thinking about how to put out further groundbreaking biological and genetic research, and she often keeps saying "Do you want to try dying once?". Previously she was considered one of the most dangerous people by the students, but after they got to know her better, everyone changed their perspective on her, and the clone humans became the more shocking matter.